The term ‘person’ refers to a being that consists of life and a soul, and has the capability of conscious thought, i.e. is a sentient being. A human, on the other hand, is described as part of the Homo sapiens...

Teeth are hard organs which are situated at the oral cavity. There are four main types of teeth which are classified according to their shape and structure. They all have specific functions related to the...

A need is anything which is essential for survival. Everything else than need falls into the category of want which is inessential for basic survival but is usually required for the fulfillment of desires.